Update to 1.3.8rc2
    
    - Update to 1.3.8rc2
      - mod_sftp crashes when handling aes256-ctr OpenSSH-specific key with some
        old OpenSSL versions (Bug #4401)
      - mod_ifsession failed to reset directory config lookup after <Directory>
        section merges (Bug #4315)
      - Support <Limit> configurations for HELP command (GH#1296)
      - Add support for the libidn2 library, over libidn, for e.g. mod_rewrite
        mappings (GH#1286)
      - Changed the default behaviour of mod_tls, such that TLS renegotiations on
        control/data connections are not requested by default - TLS renegotiations
        have a long and sordid history; many SSL/TLS libraries no longer implement
        them, or disable them by default (Bug #4443)
      - mod_auth_otp should honor RequireTableEntry semantics for SFTP logins
        (GH#1319)
    - Build with libidn2 support
    - Drop support for EOL distributions prior to EL-7
      - Always use systemd and assume preset support
      - %{rundir} is always /run
      - Use systemd scriptlet macros from systemd-rpm-macros
      - Always use libmemcached
      - Use %license unconditionally
    - Fix use of deprecated check APIs (GH#1262)